Shock-absorbing mechanism



June 26, 1192s.

S. B. HASELTINE sHqCK ABSOEBING MECHANISM "File Feb. 28, 1927 l Patented s.llnrae 26, i928.

airs rss r il@ STACY B. HASELTINE, OF CHICAGO, ILLINOIS, ASSIGNOR TO W. H. MINER, INC., OF CHICAGO, ILLINOIS, A CORPORATION OF DELAWARE.

SHOCK-ABSORBING MECHANISIVI.

Application filed February 28, 1927. Serial No. 171,416.

This invention relates to improvements in shock absorbing mechanisms.

One object of the invention is to provide a shock absorbing mechanism of the tandem spring type, especially adapted for railway draft riggings, including front and rear main followers and intermediate followers co-opera-ting with the springs, wherein the intermediate followers are both provided with means co-operating with both mainl followers when the mechanism is fully compressed to limit approach of the same and provide column load transmitting means of exceptional strength tol prevent undue compression of the main spring resistance elements.

Another object of the invention is to provide a spring shock absorbing mechanism of the character indicated, including front and rear main followers, and front and rear intermediate followers co-operating with tandem springs and each having arms in the form of continuous bars extending forwardly and rearwardly therefrom, wherein the continuous bars function as a column load transmitting means when themechanism is fully compressed to transmit the force direct from one main follower to the other and prevent the springs from being compressed to an excessive degree. y

A more specific object of the invention is to provide a tandem spring shock absorbing mechanism including front and rearl main followers, f pressure transmitting` bars interposed between the main followers, certain of which bear on the front main follower and have their rear ends spaced from the rear main follower and others of which boar on the rear main follower and have their front ends spaced from the front main follower, the spacing of said bars from the rcspective main followers being equal to the predetermined compression stroke of the mechanism, whereby when the mechanism is fully compressed, the bars will act as a stop column means to limit the approach of the main followers; a front intermediate follower fiXed with respect to the bars bearing on the rear main follower, a rearintermediate follower fiXedwith respect -to the bars bearing on the front main follower, and tandem arrangedsprings, one member'of which is interposed between the front main and the front intermediate followers and the other of which is interposed between the rear intermediate and rear main followers.

Other objects and advantages of the invention will more fully and clearly appear from the descriptions and claims hereinafter following.

In the drawings, forming a part of this specification, Figure l is a horizontal, longitudinal, sectional view of a portion of a railway draft rigging, showing my improvements in connection therewith. Figure 2 is a `vertical transverse sectional view corresponding substantially to the line 2-2 of Figure l the springs being omitted. Figure 8 is a plan view of one of the combined pressure transmitting and intermediate follower members of my improved spring shock absorbing mechanisms. And Figure t is a front end elevational view of the member illustrated in Figure 3.

In said drawings, 10-10 indicate channelshaped center or draft sills of a railway car underframe, to the inner sides of which are secured the usual front stop lugs ll-l-l and rear stop lugs 12-12. The inner end portion of the drawbar is indicated by 13, to which is operatively connected `a yoke lli of well known form. My improved shock absorbing mechanism proper and the front and rear mainfollowers -15 and 16 are disposed within the yoke, and the yoke in turn is supported in operative position by a detachable saddle plate 17 fixed to the draft sills,

The improved shock absorbing mechanism co-operates with the front and rear main vfollowers 15 and 16 and comprises broadly: A combined pressure transmitting member and front intermediate follower A; a combined pressure transmitting member and rear intermediate follower B; and tandem arranged spring resistance elements C-C.

The front and rear combined pressure transmitting member and intermediate followers are of similar design, but reverselyV arranged Each of these combined members comprises a transverse intermediate follower member 18 having forwardly and rearwardly projecting arms at two diagonally opposite corners thereof. The forwardly projecting arms of the front member A are designated by 19 Vand the rearwardly projecting arms thereof are designated by 20. As most clearly shown in Figure 3, the arms 19 and 20 on each side of the follower' 18 are in longitudinal alignment and in effect form a continuous bar member. As clearly shown in Figures 1 and 8, the arms 19 are longer than the arms 20. Each of the arins 19 and 20 are of angular cross'section as vmost clearly shown in Figures 2 and 4.

opposite sides as shown in Figure 4 to ac-` commodate these arms. The rearwardly projecting arms of the member B which are also designated by 19, embrace the follower element 18 of the member A, the lfollower element 18 being cut away at opposite sides similar to the member 18 liereinbefore described, to provide clearance for these arms. rihe forwardly projecting arms of the member B are also designated by 2O and are sliiorter than the arms 19 thereof. The longitudinal meeting edges of the arms 19 and 2O of the members A and B ai'e provided with horizontal flanges 21 providing flat bearing surfaces for these arms.

As clearly shown iii Figure 1, the arms 19 of the member A bear on the front main follower 15 and the rear ends of the arms 2O of this member are spaced from the rear follower 16 a distance equal to the permissible compression stroke of the mechanism,

`and the arms V19 of the member B bear onl the rear main follower 16 and the front ends of the arms 2O of this member are spaced from the main follower 15 a distance equal to the spacing between the rear ends of the arms '20 of the member A and the follower 16. It will thus be evident that wlien the mechanism is fully compressed, the opposite ends of the bar-like members comprising the arms 19 and 2() of the two members A and B will be engaged simultaneously by the front and rear 'followers 15 and 16, thereby positively limiting the compression of the mechanism, the bar elements acting as column load transmitting stop members to prevent the springs from being unduly coinpressed. The intermediate follower 18 of the member A functions as a rear intermediate follower and bears on the front end ofv j cluding a llight inner coil and a relatively heavier outer coil. The coils of the front spring resistance element are interposed betweenjthe front main follower 15 'and the front intermediate follower 18, and the coils of the rear spring resistance element arey interposed between the rear intermediate follower 18 and the rearmain follower 16.

The operation of my improved shock absorbing mechanism, assuminga compression strole, is as follows: The main followers 15 and 1G will be moved rela-tively toward each other, thereby forcing the rear intermediate follower toward the rear main follower and the fi'ont intermediate follower toward the front main follower through the medium of the arms 19 and effecting compression of the main spring resistance means in tandem. Compression of the mechanism will continue either until the actuating force is reduced, oi the outer ends of the arms 20 come into engagement with the front and rear main followers 15 and 1G, whereupon relative movement of the main followers will be positively stopped, the bai" members comprising the arms 19 and 2O acting as column load transmitting means directly transmitting the force from one follower to another, thereby preventing undue compression of the main springs. Upon release, when the actuating force is reduced, expansion of the spring resistance means C will return all of the parts to the normal position shown in Figure 1.

While I have herein shown and described what I now consider the preferred Vmanner of carrying out my invention, thesame is merely illustrative, and I contemplate all changes and modifications that come within the scope of the claims'appendedl hereto.

I claim:

1; In a shock absorbing mechanism, the combination with front and rear main followers; of front and rear intermediate followers, said rear intermediate followers being provided with forwardly projecting and reari'vardly projecting arms, said forwardly projecting arms bearing on the front main follower and said rearwardly projecting arms being normally spaced from the rear main followerandv adapted `to engage said rear follower rwhen the Vmechanism is fully compressed, said front intermediate follower also being provided with forwardly and rearwardly projecting arms', said lastV named forwardly projecting arms being normally follower and adapted to engage the same upon full compression of the mechanism and said last namedy rearwardly projecting arms bearing .on the rear main follower; and fi'ont and rear springs interposed respectively between said front main andfront intermediate followers and said rear' -main and rear intermediate followers.

2.y In a tandem spring shock absorbing mechanism, the combination with front and rear main followers;V of two sets of pressure transmitting bars interposed between-said main followers, said 'bars all beingofunispaced from the front mainA ferm length, one set of bars bearing on the front main follower and movable therewith and having their rear ends spaced from the rear main follower and the other set of bars bearing on the rear main follower and being movable therewith and having their front ends spaced from the front main follower a distance equal to thev spacing between the rear main follower and the rear ends of said first named set of bars, all of said bars engaging both of said main followers upon full compression of the mechanism; front and rear intermediate followers movable respectively with said sets of bars movable with the rear and front main followers; and tandem arranged springs, one member of which is interposed between the front main and front intermediate followers and the other of which is interposed between the rear main and rear intermediate followers.

3. In a tandem spring shock absorbing` mechanism, the combination with front and rear main followers; of front and rear intermediate followersb each having'A on two diagonally opposite sides thereof continuous bar-like arms projecting forwardly and rearwardly therefrom, said intermediate followers each being cut away at the remaining two diagonally opposite sides, saidA rear intermediate follower Abeing arranged with the forwardly projecting arms thereof worle ing in the cut away portions of the front intermediate follower and bearing on the front main follower, and the front intermediate follower having the rearwardly projecting arms thereof working in the cut away portions of said rear intermediate follower and bearing on said rear main follower; a spring resistance element interposed between said front main and front intermediate followers; and a spring resistance element interposed between said rear main and rear intermediate followers.

4. In a tandem spring shock absorbing mechanism, the combination with front and rear main followers; of front and rear intermediate followers, each having on two diagonally opposite sides thereof continuous angular bar-like armsA projecting for wardly and rearwardly therefrom, said rear intermediate follower being arranged with the forwardly projecting arms thereof bearing on the front main follower, and the front intermediate follower having the rear wardly projecting arms thereof bearing on said rear main follower; a spring resistance element interposed between said front main and front intermediate followers, and a spring resistance element interposed between said rear main and rear intermediate followers.

5. In a tandem spring shock absorbing mechanism, the combination with front and rear main followers relatively movable t0- ward and away from each other; of front and rear intermediate followers, each of said intermediate followers being provided with longitudinally disposed side arms, forwardly and rearwardly projecting therefrom, one front and one rear arm of each intermediate follower being continuous and disposed in alignment and forming in eect a continuous bar member, the front arms of the rear intermediate follower being longer than the rear arms thereof and bearing on the front main follower, and the rear arms of the front intermediate follower being longer than the front arms thereof and bearing on the rear main follower, said continuous bar members of the front and rear intermediate followers being of uniform length; and tandem arranged springs, one member of which is interposed between the front main and front intermediate followers and the other member of which is interposed between the rear main and rear intermediate followers.

6. In a tandem spring shock absorbing mechanism, the combination with front and rear main followers; of a plurality of pressure transmitting bars interposed between said main: followers, said pressure transmitting bars being of uniform length, said bars being arranged in two sets, one set of bars bearing on the front main follower and movable therewith and having the rear ends spaced from the rear main follower' and the other set of bars bearing on the rear maih follower and being movable therewith and having their front ends spaced from the front main follower; a rear intermediate follower fixed with respect to said first set of bars and movable therewith; a front intermediate follower fixed with respect to the second named set of bars and movable therewi}th, and tandem arranged springs, .'one member of which is interposed between the front main and front intermediate followers, and the other member of which is interposed between said rear main and rear intermediate followers.

In witness that I claim the foregoing I have hereunto subscribed my name this 16th day of February 1927.

sTAoY B. Easier/HNE.

autumn or connection.

htm No. 1.674375. Granted )une 26, 1928, to

mcy n. msmmn.

It is hereby eertified that error lppelrs in the above numbered patent requiring correction ls followsf The preaent drawiug should be canceled lud the drawing contlining tour figures es shown below should be insert tlhere- (ore as part of the Letten Patent;

June 26, 1928. 1,674,826

s. B. HASELTINE SHOCK ABsonBING MECHANISM Filed Feb. 28, 1927 mdthat the said Letters Patent should he read with this correction therein that the '-ume may conform to the record of the crise in the Patent (mice.

Signed and sealed this 7th day of August, A. D. 1928.

.L Moore,

mm Amina Cnmmininner nl Patents. 

